Business Details
19 Years
experience
Trusted Mental Health Services in Thunder Bay
Sullivan + Associates Clinical Psychology was founded in 2007 by Dr. Jennifer Sullivan and Trevor Sullivan in Thunder Bay, Ontario. Over 18 years, we've grown to 65 team members, including 50 master's and doctoral-level clinicians, serving over 40,000 clients across Ontario. Our practice focuses on psychological assessments and psychotherapy/counselling, with expertise in mental health, learning, attention, autism, and neuropsychology. We maintain a client-centered approach, emphasizing collaboration, goal-orientation, and evidence-based practices. Our team specializes in treating diverse populations, including children, adolescents, and adults, with conditions like anxiety, depression, trauma, ADHD, and autism.We've completed over 280,000 appointments and offer virtual services to improve accessibility. Our clinicians undergo rigorous training and maintain memberships with professional organizations like the College of Psychologists of Ontario. We guarantee client satisfaction with a free first session if the initial therapist connection isn't optimal. Our clinic prioritizes timely service delivery, recognizing the negative impacts of delayed mental health treatment. We also provide psychoeducational workshops and free mental health resources to promote community well-being.
Services
Psychological Assessments
Psychotherapy
ADHD Evaluations
Autism Spectrum Assessments
Neuropsychological Testing
Mental Health Workshops
Virtual Counselling
Parent Training Programs
School-Based Assessments
Trauma Therapy
Details
- Year established: 2007
Highlights and features
- 18 years of clinical experience with 280,000+ appointments completed
- 50+ master's and doctoral-level clinicians specializing in diverse mental health areas
- Evidence-based treatments including CBT, DBT, and trauma-focused therapies
- Comprehensive psychological assessments for mental health, learning, and neurodevelopmental conditions
- Free initial consultation and therapist matching guarantee
Associations and certifications
- College of Psychologists of Ontario
- College of Registered Psychotherapists of Ontario
Services
Psychological Assessments
Our comprehensive psychological assessments help identify mental health conditions through clinical interviews, psychometric testing, and diagnostic analysis. The process includes initial consultation, testing sessions, data interpretation, report writing, and feedback meetings. Our psychologists use evidence-based methods to diagnose conditions like anxiety disorders, depression, and trauma-related issues while providing practical treatment recommendations.
Psychotherapy
We offer evidence-based psychotherapy services using cognitive behavioral therapy, dialectical behavior therapy, and trauma-focused approaches. Treatment plans focus on skill development, emotional regulation, and behavioral changes through collaborative, goal-oriented sessions. Our therapists work with clients to address anxiety, depression, relationship issues, and trauma recovery across different age groups.
ADHD Evaluations
Specialized ADHD assessments for children, adolescents, and adults follow a five-step process including clinical interviews, cognitive testing, and behavioral analysis. Our psychologists identify attention-related challenges while differentiating between ADHD presentations. The evaluation includes practical recommendations for academic accommodations, workplace adjustments, and treatment planning.
Autism Spectrum Assessments
Our autism assessments combine developmental history reviews with standardized testing protocols to evaluate social communication patterns and behavioral characteristics. The diagnostic process helps identify support needs while providing guidance for educational planning and community resources. Assessments follow current DSM-5 criteria for autism spectrum disorder.
Neuropsychological Testing
These comprehensive evaluations assess cognitive abilities, memory function, and executive functioning through specialized testing batteries. Our neuropsychologists identify patterns of cognitive strengths and weaknesses related to brain injuries, developmental conditions, or neurological disorders. The assessment includes detailed recommendations for rehabilitation strategies and daily living accommodations.
People
Dr. Jennifer Sullivan
Clinical Psychologist/Chief Executive Officer
Dr. Sullivan has 24 years of experience providing psychological assessments and psychotherapy. She specializes in assessments for children, adolescents, and adults, holding certification as a Clinical Traumatologist. She leads our clinical team while maintaining active practice involvement.
Trevor Sullivan
Psychotherapist/Managing Director
With 22 years of experience and over 20,000 psychotherapy sessions, Trevor specializes in treating anxiety, depression, and trauma with adults. He co-founded our clinic and focuses on maintaining our original commitment to accessible, effective mental health care.
Dr. Suzanne Chomycz
Clinical Psychologist
Dr. Chomycz specializes in neurodiverse client care using evidence-based approaches including CBT and mindfulness. She diagnoses and treats conditions like learning challenges, ADHD, anxiety, depression, and trauma while supervising emerging mental health professionals.
Stefanie Dumoulin
Psychotherapist
Stefanie provides psychotherapy for children, adolescents, adults, and couples. She addresses anxiety, depression, grief, anger, and trauma while emphasizing client skill development for improved life outcomes through her therapeutic approach.
Jasmine Petersen
Clinical Psychologist
Jasmine specializes in culturally effective services for Indigenous communities and neurodivergent individuals. She assesses and treats depression, anxiety, traumatic stress, and neurodivergence across the lifespan while advocating for mental health awareness.
Questions
What mental health services do you offer?
We provide psychological assessments, psychotherapy/counselling, ADHD evaluations, autism spectrum assessments, neuropsychological testing, and trauma therapy for children, adolescents, and adults.
How can I book an appointment?
Visit our website to complete an online consultation form or contact our clinic directly to schedule assessments or therapy sessions with qualified clinicians.
Do you offer virtual mental health services?
Yes, we provide virtual counselling and assessments through secure online platforms to improve accessibility across Ontario.
What qualifications do your clinicians have?
Our team includes 50+ master's and doctoral-level psychologists and psychotherapists with specialized training in evidence-based treatments and diagnostic assessments.
Are your psychological assessments covered by insurance?
Most extended health insurance plans cover services provided by registered psychologists and psychotherapists. Check your specific policy for details.
Do you offer free mental health resources?
Yes, we provide free psychoeducational workshops, articles, infographics, and videos covering anxiety, depression, parenting strategies, and coping techniques.
